220354661 has 8 divisors (see below), whose sum is σ = 228571200. Its totient is φ = 212278752.

The previous prime is 220354601. The next prime is 220354669. The reversal of 220354661 is 166453022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220354661 - 2²⁶ = 153245797 is a prime.

It is a super-3 number, since 3×220354661³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220354669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31961 + ... + 38238.

It is an arithmetic number, because the mean of its divisors is an integer number (28571400).

Almost surely, 2^220354661 is an apocalyptic number.

It is an amenable number.

220354661 is a deficient number, since it is larger than the sum of its proper divisors (8216539).

220354661 is an equidigital number, since it uses as much as digits as its factorization.

220354661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70315.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 220354661 is about 14844.3477795422. The cubic root of 220354661 is about 604.0052966876.

The spelling of 220354661 in words is "two hundred twenty million, three hundred fifty-four thousand, six hundred sixty-one".